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summary
Specification for alternating-current relays for railway signalling: track relays (double-element, 2-position), line relays (single-element, 2-position). | Status: Withdrawn
Details
Publisher
BS
File size
279.92 KB
Pages
12
Format
PDF
Publication date
1951-06-08
ISBN-13
978-0-580-01729-2
ISBN-13 plain
9780580017292
ISBN-10
058001729X